14000+7x=35x (x being the number of books) solve for x and you have your answer. 14000=35x-7x=28x therefore x=14000/28=500 so he needs to sell 500 books before he breaks even.
1.) Distribute 4 to (3x) & (8): , 2.) Rewrite the expression: 3.) Combine like terms: 4.) Rewrite the final expression: Final Answer: <span> Hope this helps!! </span>